York State Fair in York
The York State Fair runs each year in late July for ten days on the York Expo Center grounds in York, Pennsylvania, and traces its roots to 1765, a lineage it points to in claiming to be the oldest fair in the country. It is currently branded York State Fair, though it is not run by state government; it grew out of the historic York Fair organized for generations by the York County Agricultural Society.
Its claimed deep history and fairgrounds scale make it a major PA event.